Apparatus for applying spiral wrappings



May 15, 1928.

1,670,061 J. CARROLL Y APPARATUS FOR APPLYING SPIRAL WRAPPINGS Filed April 15, 19.27 2 Sheets-Sheet 1 QQ DCJ I a A I w $2 (3 Q h KO bo Q I W .n 3

\I\ Q N N\ rq A g s L/OJEPIL/ (Free on.

ATTORNEYS Patented May 15, 1928. j

' UNITED STATES v iaraaei;

PATENT [fiFFEQE-g JOSEPH CARROLL, or BROOKLYN, NEW YORK, assienon TO SPADONE MACHINE con: I

PAN'Y, me, or NEW YORK, N. Y., A ooaroaarionor NEW YORK. 1

APPARATUS FOR AEPLYING SPIRAL WRAPPINGS.

Application filed .ltpril 13, 1927. Serial INl'o. 183,287.

The invention relates to the art of spirally wrapping rubber hose, tubing, rubber covered rolls and the like with one or more 'wrappings of material prior to the curing or vulcanizing or other finishing treatment of the hoseor other article. 'In practice the hose or other article to be wrapped may be mounted in any suitable manner forrotation about its axis. Up to the present the mate- V rial to be spirally Wrapped upon the hose or other article, has been mounted in the form of a roll upon a spindle adapted to be carried in the hands of an operator who is compelled to manually manipulate the roll of material in oblique or other predetermined relation to the article to be wrapped. The end of the wrapping material, which generally is in a wet condition having been previously caused to adhere to the hose or other article, the latter as it rotates will cause the aforesaid material to be spirally wound upon Said hose or. other article. If, as is generally the case, an additional wrapping is to beapplied upon the first wrapping, the operative relation of the roll of material in the hands of the operator is reversed when a predetermined point in the hose or .otherarticle'is reached and the'operator at the. same time varies the manipulation of said roll of material accordingly. v

The second wrapping is generally wound upon the previous wrapping in reversed spiral relation thereto. Obviously with such manual application of the wrapping or wrappings, the control exercised by the operator is bound to vary with the result that the.

tomatically applied'to the hose or other article in auniform and most eflicient manner. Other objects of the invention will appear from the description hereinafter'and the features of novelty will be pointed out in the claims.

In the accompanying drawings which illustrateexamples of the invention without defining its limits, Fig. 1 is a front elevation of the wrapping apparatus in operative refra gmentary plan view; Fig. 3 is a de'tail section approximately on theline 3- 3.ofv

Fig. 2; Fig. 4; is a longitudinaldetail sectionv it 1 approximately on'the lined- 1 of Fig. 2;

Fig. 5 is a detail section on the line; 555

of FigJlq Fig. 6 is an enlarged fragmentary, section. showing a latching device "included [in the apparatus; Fig. v7. is a vertical section illustrating another form of the device, and Fig. 8.1s a horizontal sectionthereof onjthe line 8-8 of Fig. 7. v v T I The apparatus in its illustrated formcoin prises aguideway which isshown in the form of two" bars or rods 10 located v in spacedparallel relation and carried by supporting members 11 at a predetermined height. A carrier adapted to deliver the wrapping material in oblique relationto the hose is arranged to move'lengthwise ofthe rods 10 and in the illustrated example consists of a slide 1:2, sl'idably mounted on the rodslO andasupport lii pivotally connect cd 9.1114 with the. slidejl2 to' oscillate about an axis perpendicular to the slide; in order to facilitate the travel of the slide 12 along the rods 10. said slideis preferably mounted onsaid rods by means of rollers 12. Uprights ,areffixed upon the support 13 inv perpendicular relation. thereto and are slottedlengthwise as indicated at16 for slidably accommodatingbearing brackets 17 as shown in Figs. 2 and..3. The bearing brackets are formed with outwardly; open re cesses. 18 in wh ch a spindle 19 is arranged to be journalled, suitable provision being made tomaintain said spindle against unintentional removal from therecesses 18; in the illustrated example the meansinf q'ues tion. comprises clamps 20' pivoted at 21 on the brackets 17 andprovided with operating handles 21 to facilitate the manipulation of 'said' clamps, the latter are locked in their operative positions in any: convenient manner as by meansofpins 21 removably;

inserted through registering apertures in the brackets 17 and clamps 21, as shown inFig.

2." In order to preventthe spindle 19 from;

loo

rotating with undesired freedom, friction sleeves 22 are'located upon the spindle 19. in therecesses 18. andare heldthereon by the aforesaid clamps 20, asshown in Fig; 3. The arrangement is such thatthe a'Xiso f the spindle 19 extends. in a direction parallel with the major median line of the support lation to a hose being wrapped; Fig. 2 is 3.13 and preferably in registryv therewith.

V 24 in the form of a roll 25.

The spindle 19 is adapted toreceive' a spool 23 carrying a supply of wrapping material The latter, when occupying its operative position, rests upon and in surface engagement, with a preferably curved friction member 25 rig idly fixed upon the-support 13 as shown in Fig. 5. In the preferred construction pro- 'vision is made for maintaining the bearing brackets 17 in ara-ised position on the uprights 15 in order to facilitate the mounting and removal of spools 23 upon and from the spindle 19; for this purpose the bearing brackets 17, as shown in 5, may be provided-with notches 26 adapted to beengaged by. pawls 27 which normally project into the slots 16 through openings 28 formed in the uprights 15. The'pawls arefixed upon v the ends ofwhichare in adhering overlappingrelation to each other.

In order to separate these overlapping ends to prevent the material 24 from beingwrapped about the hose therewith, a device 24:? is pivoted at 24' and is pressed against the lowersurface of the material 24 as it passes fromthe roll 25. When an overlapping connection between two sections of material'reaches the device 24*,the latter serves by peeling off the one section to separate said two sections;

to the guideway consisting of the rods 10 as soon as the one section is completely.

wound upon the hose, the free end of the next succeeding section is fastened in place on the hose and the winding proceeds.

The, support 13 is arranged tooccupy two operative positions extending diagonally to the slide'12 in opposite directions whereby the supply of wrappingmaterial or more specifically the axis of rotation of the roll 25, that is the spindle 19, extends'obliq'uely andthe wrapping'gmaterial is delivered to the hose in predetermined oblique relation thereto. WVhile the pull upon the material 24" during the wrappingwill ordinarily be sufiicient to maintain the support 13 in either one of'its two diagonal positions, it is preferred to provide a means for definitely locking said supportin each one of said operative positions. In the illustrated example this means is shown in the form of a bellcrank lever pivotedat 32 upon the support 13 and having one arm 33 provided with a material during the wrapping.

depending] pin 34 arranged to co-operate with notches 35 formed at the proper points in the one end edge on the slide 12, as shown in Fig. 2. Theaforesaid lockingmeans further constitutes a switch and includes a switch arm 36, the purpose of which will appear more fully hereinafter.

In those instances where more than one wrapper is applied to the hose the diagonal position of the support 13 on the slide 12 and consequently the oblique relation of the material. 2 1 to the hose being wrapped is an ton'iatica-lly reversed when a predetermined point on the hose is reached. In the con -struct1on shown. in the drawings this is ac' complishediby means of the'switch-arm- 36; which engages a stop 37 adjustably; mounted on one of the rods 10 by means of'a block 38which is secured in an adjusted'position in any suitablen'ianner as for instance", by

means of a set screw 39; the operation'of this p'aitof the apparatus will appear more fully hereinafter.; I i

sis

The carrier, that a, the slide 12 with the support"13 and its associated elements is moved" lengthw se of the guidefrods 10 by means of any suitable mechanism, whichjin the*drawings,' shown in the form of a sprocket chain 4.0 having its opposite ends connected to the slide'12 and passing over sprocket wheels ell iournalled on the supports 11 as shown in Fig. 1.' Motive power is applied to the chain 410 in any convenient mannercapable of creating a reversed motion in said chainas required; in the draw .ings this means comprises a pulley 42 mounted to rotate with one of the sprockets 41 and connected by means of a belt 13 with an electric motor or other'de'vice; 'In' order tore verse a travel of the carrier and its assoclated elements coincidentally" with" the IUU shifting of the support 13 from one ofits I diagonal positions to another, :asuita-blereversing switch 37" is adjustably mounted upon one of the. rods 10 so as to he operated at the proper time by the'slide 12' v I der an even tension during thewrappin'gof the hose so as to insure an even and uniform wrapping thereof, means is provided whereby the tensional strain is applied to said In order to maintain the inaterial' 2411111 l'iu - Inthe form of the invention illustrated in i Figs. 1 to 6 inclusive, the aforesaid ten sionalstrain is developed through the medium of weighted means co n 'nr'isinga wveight' i i carried by a frame 45 dependingfrom the bearing brackets 17 as show'nin Fig.4. In the preferred arrangement, -the'*weight, 4:4 is vertically slidable upon an upright guiding rod' 1-6 within a cylinder depending from the support 13 through an aperture in the slide 12, and in addition to itsother functions comprising thepivotal ax'is 14 about which the support 13 oscillates; the afore the cylinder 14 and into an annular groove said cylinder has. accordingly been designated with the reference character 14. As shown in Figs. 3-and 4, the cylinder 14 is provided withv diametrically opposite vertical slots 47 for the accommodation of the cross bar Wl1l'Cl1"fOI111S part of the frame 45. In order to provide an increased tension on the wrapping material for instance, during the application of a given wrapper, a second weight 48 is slidably mounted upon the rod 46 in superimposed relation to the weight 44.. For the purpose ofsuspending the secondweight 48 inan inoperative position during such times as the tension producing effect of the weight '44 alone is desired, a latch 49 is arranged to project into 50 with which the weight 48 is provided;

. The latch 49 ismounted in and restored to its operative position by means of a spring a link Y52 and pin 34 with the arm of the switching device 333 'With this arrangement the weight 48 capable of being suspended in an inoperative position at a distance'above the weight 4421s indicated in Fig. 6 and the latch 49 will be operated to release's'aid weight 48 coinci- 'deritally with the actuation of" the switching device 33'36" in the performance of its several functions.

As shown in Figs. 3' and '5 provision is made for easily and quickly raising the weight 48 into position to be inoperatively suspended by'the latch 49 when this is desired. For this purpose racks 54 are fixed at diametrically opposite points exteriorly of the cylinder 14 as'shown in Fig. 5 and extending lengthwise thereof adjacent to slots 55 with which thecylinder 14 is provided. Pinions 56 are mounted upon a shaft 57 journalled in the tension developing means as sh-ownin Fig.5 and are arranged to travel lengthwise of the racks 54 a crank handle 58 is fixed on the shaft 57 to facilitate the rotation of'the pinions 56.

It will be obvious that as the crank han-- dle 58 is rotated in the proper direction the pinions 56 will be caused to travel upwardly along the racks 54 and will consequently raise the weights 44 and 48V until the groove 50 of the latter comes into registry with the latch 49' which thereupon will snap into said groove and retain the Weight in its elevated position. After the suspension of the weight 48 in its inoperative position has been accomplished, the weight 44 and its associated elements may be permitted to return to their normal position.

In the form shown in Figs. 7 and 8, the

support 13 is pivotally mounted upon the slide 12 by means of a pivot pin 14 and two cylinders 59 similar to the cylinder 14 depend from the support 13 through slots or apertures 60 provided in the slide 12 and curved in arcs having the pivot pin 14 as'a center.

The weighted means whereby the Y tension on the "wrapping material-is devel oped, in this form of the invention, comprises a pair of weights 44 suspended from the bearing brackets 17 by'means of mem hers 45 so as to be vertically movable in the cylinders 59; in the preferred arrangement connecting member 61which extei'idsithrough slots 47 wvitl1 which the cylinders 59 are provided." Additional Weights 48?, similar the weights 44 are connected by means of a so i with a link 52 forming part ofthe switch 9 36 asshown in Fig. 8. The latching devices 49 are arranged to extend into annular grooves 5O with which the :weights 48 'are provided as in the form first' described; a sp'ring fil being provided for maintaining the latchingfdevices 49 in, and returning; them to their normal positions.-

In practice.the'wrapping apparatus is located. either as a' component part of the hose winding machine 301' as an apparatus independent thereof, in operativerelation to the means whereby the hose to be'wrapped is rotatably actuated; this means, as shown in Fig. 1 may comprisea plurality of rolls 6 4.

between which hose 65 is supportedon a suitable mandrelj The rollers arefrotated by suitable gearing 66 so as to continuously rotate the hose'65f upon'its axis. 'In operation. the bearing blocks are raised to an elevated position in which they are held by the pawls 27 engaging the notches 2 6 inorder to permit a roll 25 of wrapping material to be placed upon the spindle 19an d the'latter Wil to be set into the recesses 18 of the'bearing blocks 17. The pawls 27 are thenactuate'd to release the bearing blocks 17 and permit the roll 25 to'descend into surface engagement with the friction member 25*, the. action of the weight 44 will causethe roll 25 to press against the friction member 25 to thereby develop a resistance to the'un wind- I ing of the material 24 which, as a' result," is placed under atensional strain'and accord- 'ingly is applied to the hose under such" strain. jTo start tliewrapping operation, the

carrier, with the roll 25'thereon; is shifte'd, for instancatoward the extreme left in Fig. 1, vif it does not already occupy such position and the support 13 is adjusted -to t-he position indicated by dotted lines i'n Fig. 2

The end of the wrapper 24becauseof the fact that it is wet is then caused toadhere to the hose so that at this stage the material 24 is locatedin apositiont o be delivered from the roll 25 to the hose 65 in oblique relation thereto. As the hose is now causedto rotate about its axis the material 24 will be'withdrjawn from the roll 'and will be wound or wrapped upon saidhose; the endless chain iO being at the same time actuatedtocause its upper run to travel toward the right, in Fig; 1, the carrier with the roll 25 thereon 'wil'lbe drawn. along or shifted lengthwise of the rods 10 and consequently lengthwise of the hose in the same direction over a fixed path parallel with said'hose, as

shown in Fig. 1. Asa result. of thisa first wrappinga will be spirally wrapped. upon the hose.- At :a predeteri'i'iined'point depending'upon the location of the block 38 ontherod 10, the switch arm 36 will engage the stopLBTand will be shifted thereby to 'firstremove the pin, 34 from the notch 35,

as will be clear from an inspection of Fig. 2.

Asthesmovement of the carrier, vor more specifically the slide 12 and support 13, con tinuetoward the right in Fig. 1, the stop 37 will exerta-v camming'action on" the switch arm 36-which will swmgthe support 13 on itsr pivot l lto the diagonal position shown hywfulllines in Fig. 2. At the same time the reversing switeh-37 will be operated to reverse the direction of travel of the chain to thereby cause the carrier and the roll 25 to travel in the opposite direction along the rods 10. Coincidentally with the above described actuation ofthe switch arm86, the, latching device 49 by means of the link 52 and pin 34 willbe withdrawn to an inoperative position and thereby permit theweightupon the material 24,while during the travel toward the left in Fig. 1 the efiect ofthe weight- 48 has been added so that the tensional strain upon the wrapping material is automatically increased As a result ofthis arrangement, the second wrapper b is ver closely and securely wrapped about the first wrapper a and thereby produces a most satisfactory product. VVhenthe carrier reaches its extreme position at the left in Fig. 1, the diagonalpositionl of the support 13 is again reversed by manual operation-of the switch 36-t0 again bringthe support 13 to the dot-ted line position in'Fig. 2 and to restore the delivery relation of the wrapping -24 to the hose as'it originally was.

The operation of the apparatus shown in- Figs. .7 and Sis the same as that above descrihed,'with the exception that as the switch 3fi cngages the stop 37 to reverse the diagonalposition of the support 13*, the latching devices 49* willbe coincidentally: and simultaneously actuated to release both .weights 48 The latter. may be lifted to an. elevated position to be agairi engaged by said latch ing devices 49*,throughthe mediumyof the cross bar 61. As shown in- Fig. 8. the apparatus isv constructed in a form in which the pull of the wrapping material 2a as it passes from the roll 25 to the hose is relied upon tdmaintainthe support 13* and its assooiated elements in its diagonal positions'on the slide 12*. .In other words, the locking means of the form first described. are omitted. I i y F WliiIe I have shownand described the apparatus in a forinadapted particularly for wrapping chose, it will be understood that i is equally well adapted for wrappingother articles such as tubing, rubber covered rolls etc. In addition, it. willbe obvious that a hose being wrapped may be. otherwise sup-,

ported and manipulated than shown, to produce I the desired results.

The apparatus is extremely simple in con: struction and efiicient in operation and operates to, provide the, hose, or: other article with one or more wrappings in reverse spiral relation to each other, under an even uniform tension, which maybe increased with successive wrappings. The wrapping apparatus n1aybeincorpo rated as apart of existing hose or other wrappingmachines or it may comprise-annit independent of such machines and capable of being set up in operative relationthereto. I

Various changes in ,the specific, forms shown and described may be made within the scope. of the; claims without departing from the spirit of theinvention. E Iclaimrm f .1

1. An apparatus for .wrapping a rotating hose, comprising a guideway defining a fixed roll of wrapping material. mounted on said carrier-to rotate about an axis oblique to said guideway whereby-wrapping. material from said roll is delivered in oblique relation roll are shifted lengthwise of said guideway in. one direction to spirally wrap the. hose with said material, a switch on said carrier, a i stop adjustably. mounted on .said guidetheoblique relation of thejaxis of rotation of theroll of material to said guideway, and means whereby thedirection of travel of path lengthwise" of and parallel with, the rotating hose, a carr eron saidguideway, a

way co-operatingwithsaid switch to reverse said carrier on said guideway is coincidentally reversedto apply a second wrapping upon the first wrapping in reversed spiral relation thereto.

2. An apparatus for wrapping a rotating hose, comprising a guideway ldefiningfa fixed path lengthwise of and parallel with the rotating hose, carrier. on said guide way, a'roll of wrapping material mounted on said 'carrier'to'rotate about an axis ob-" lique to said 'guideway whereby wrapping material from said roll is deliveredin oblique relation to-the hose, means wherebysaid 'earrier and roll arefslni ted lengthwise of said'guideway in one direction to spirally wrap the hose with sald materlah'a switch on said'carrier, a stopachustably mounted on said guideway co-operating with said switch to reversethe oblique relationof the axis of rotation of the roll ofinaterial to said guideway, means whereby t'lle'dlleclllO'll or travel of said earrleron said guideway 1s I coincidentally reversed to apply a second wrapping upon the first wrapping in reversed spiral relation thereto,"means including a weighted device for applying a tensional strain,to said material during the first wrapplng,

thereby coincidentally with the reversal of the oblique direction of the axis of rotation otsaid roll of material toincrease said tensionalstrain during the second wrapping. An apparatus for wrapping a rotating .hose, comprising a guideway defining .a

fixed path,lengthwise of and parallel with the rotating hose, a slide movable lengthwise of said guideway, a support pivotally 'mounted on said slide to oscillate about an axis perpendicular to said slide and normally occupying a position diagonal thereto, slotted uprights carried by said support, bearing brackets slidably mounted on said slotted uprights, a spindle for a roll of wrapping material journalled in said bearing brackets and defining an axis of rotation oblique to saidguideway whereby the wrappmg material from said roll is delivered in oblique relation to the hose, means whereby said slide is shifted lengthwise of said guideway in one direction to apply one wrapping spirally'to the hose, means where by the diagonal position of the support on said slide is reversed to reverse the oblique delivery relation of said material to the,

hose and whereby the direction of travel of said slide on said guideway is coincidentally reversed to apply a second Wrapping upon the first wrapping in reversed spiral relation thereto, and means whereby different tensional strains are automatically applied to said material during the two wrapping operations.

4. An apparatus for wrapping a rotating hose, comprising a guideway defining a fixed path lengthwise of and parallel with the rotating hose, a slide movable lengthwise of said guideway, a support pivotally mounted on said'slide to oscillate about an axis perpendicular to said slide and normally occupying a position diagonal thereto,

slotted uprights carried by said support,"

bearing brackets slidably mounted on said slotted uprights, a spindle fora roll of and additional weighted means controlled. by saidswitch and released wrapping"material journalled in said bean iiig brackets and defining an axis of rota tion oblique 1 to said guideway whereby the livered in oblique relation to the -hose, means .wrapping material from said roll de-- whereby said slide isshitted lengthwise of I said guideway in one-d-irectionto apply one wrapping sp rally tothe hose, means whereby the diagonal position of the support-on i said slide is reversed to reverse the oblique deliveryrelation of said material to the hose and whereby the direction of travel of said slide on said guideway is eoincidentally -re"-: versed to apply a second wrapping upon the first Wrapping y in reversed spiral relation.

thereto, a weight connected with said bealw ing brackets for applyinga tensionalstrai' to the material during thefilst wrapping-,a second weightsuspended in-an inoperative position during said first wrapping, and.

-means operated concurrently with the 'reversal of travel ofsaid slide to release saidsecond weightwherebysaiditension'al strain I on-Sard wrapping material is automatically increased during the second wrapping; 5. An apparatus forwrappmga rotating hose, comprising a guideway'defining a fixed path lengthwiseqol parallel with the rotating hose, a slide movable lengthwise of said, guideway, a'support pivot-ally mounted on said slide to oscillate about an axis perpendicular to said slide and normallyoc- 'cupying a position diagonal thereto, slotted uprights carried by said support, bearing in one direction to apply one wrapping. spirally to the hose, means wh'ereb'y the diagonal position of thesupport on said slide is reversed to reverse the oblique delivery relation of said material -to the hose i and" whereby the direction of travel ofsaid slide on said guideway is coincidentally reversed to apply a second Wrapping upon the first wrapping in reversed spiral relation thereto, a pair of connected weights depending from said bearing brackets for applying a tensionalstrain to the-material during the first wrapping, a plurality of independent Weights suspended in inoperative positions, during said first wrapping, and means operated concurrently with the reversal of travel of said slide to release said weights whereby said tensional strain on the wr p,

ping material is automatically increased during the second wrapping.

6. An apparatus for wrapp ng a rotating hose, comprising a guideway defining a fixed path lengthwise of and parallel withfthe 39 rotatinghose, a slidemovable lengthwise of said guideway, asupport pivo-tally mounted on said slide to oscillate about an axis, perpendicular tofsaid slide andvnormally. oc-- way in one direction toapply onewrapping, spirally to the hose, a switch on said supportpa stop adjustably mounted onv said guideWay co-operating with said switch to reverse the diagonal position of the support on said slide, whereby the oblique delivery relation of the material to the hose isreversed, means Whereby the direction of travel of said slideon said guideway is coincidentally. reversed to apply a second Wrapping upon the .first wrapping in reversed spiral relation thereto, weighted means depending from said bearing brackets for applying altensionalstrainto said material during the first wrapping, asecond weighted means, latching means whereby said second weightedmeans is suspended. in

an inoperative position during the" first Wrap ping,;and=a connection from said switclrto' said latching \mea-ns whereby r the latter is operated to release said second eighted means when the-switch is operated by'said on said material during the second wrap ping, I 1 7. An apparatus for wrapping a rotating hose, comprisinga guideway defining a fixed rStop,-to thereby increase the tensionalstrain" path lei'igthwise of and parallel with the rotating hose, a carrier on saidguideway, a roll of Wrapping material mounted on said carrier to-rotate about-anaxisoblique tosaid guideway whereby w'rappingzinaterial from said roll is delivered in oblique relation 'to the hose,a friction member against which" roll in-its operative position rests in surface engagement, means whereby the pressure of said roll against said'friction member is increased to apply a tensional strain to said"materialduring thewrapping.

operation, andmeans whereby said roll is suspended: insan inoperative position out of ontact with said friction member. I

In testimonywhereof I have hereunto set JOSEPHCARROLL. f 

